ath9k_hw: set 5 GHz half/quarter channels on AR9002 using fractional mode

The radio seems to perform better that way

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9002_phy.c b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
index abc2cc8cefb7..ac8b35c5fa06 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
@@ -111,7 +111,9 @@ static int ar9002_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
 
                 switch (ah->eep_ops->get_eeprom(ah, EEP_FRAC_N_5G)) {
                 case 0:
-                        if ((freq % 20) == 0)
+                        if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
+                                aModeRefSel = 0;
+                        else if ((freq % 20) == 0)
                                 aModeRefSel = 3;
                         else if ((freq % 10) == 0)
                                 aModeRefSel = 2;